'use strict';
exports.main = async (event, context) => {
	//event为客户端上传的参数
	console.log('event : ', event)
	// let category=event.category 
	const db = uniCloud.database();
	const dbCmd=db.command;
	let res=await db.collection('tiku').where(
	{
		_id:dbCmd.neq('')
	}).get()
	//返回数据给客户端
	return res
};
